Single-Stage Grid-Connected Photovoltaic System Based on Sliding Mode and PI Control

Yuan Sheng Xiong; Su Xiang Qian; Qing Song Liu

doi:10.4028/www.scientific.net/AMR.512-515.271

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 512-515Single-Stage Grid-Connected Photovoltaic System...

Single-Stage Grid-Connected Photovoltaic System Based on Sliding Mode and PI Control

Abstract:

Single-state grid-connected photovoltaic (PV) system has only one stage of power conversion and the control objectives needed to be considered simultaneously include synchronization with the utility voltage, harmonics reduction for grid-connected current and etc. Then the complexity of control strategy is increased. To deal with the characteristics, sliding mode controller is used to achieve the synchronization between grid-connected current and grid voltage and to control the waveform of grid-connected current, and the slide surface is designed based on PI method. Σ−Δ modulator is proposed to achieve the fixed switching frequency. Simulation results show that the system has good performance and the system is feasible.

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Periodical:

Advanced Materials Research (Volumes 512-515)

Pages:

271-275

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.512-515.271

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Online since:

May 2012

Authors:

Yuan Sheng Xiong, Su Xiang Qian, Qing Song Liu

Keywords:

Grid Connected, Photovoltaic (PV) System, Sliding Mode Control, Σ−Δ Modulator

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